Process of and device for removing rivet heads



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B. C. WYSONG.

PROCESS OF AND DEVICE FOR REMOVING RIVET HEADS. APPLICATION FILED SEPT.28. 1920.

1,436, 557. Patented Nov. 21, 1922.

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INVENTDR ATTORN EY B. CfWYSONG.

PROCESS OF AND DEVICE FOR REMOVING RIVET HEADS. APPLICATION FILED SEPT.28, 1920.

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INV ENTOR ATTORN EY Patented Nov. 21, 1922.

Patented Nov. 21, 1922.

UNITED STATES 1,436,557 PATENT OFFICE.

BENNETT CLAY WYSONG, OF HUNTINGTON WEST VIRGINIA, ASSIGNOR OF ONE- THIRDTo C. V. RATCLIFF AND ONE-THIRD T0 J. B. CARTER, BOTH OF HUNTING- TON,WEST VIRGINIA.

PROCESS OF AND DEVICE FOR REMOVING RIVET HEADS.

Application filed September 28, 1920. Serial No. 413,413.

T 0 all whom it may concern:

Be it known that I, BENNETT C. \VYsoNc, a citizen of the United States,residing at Huntington, in the county of Cabell and State of VestVirginia, have invented new and useful Improvements in Processes of andDevices for Removing Rivet Heads, of

which the followin is a specification.

This invention relates to means for removing rivet heads and the likeand has for one of its objects the provision of an electropneumaticdevice for this purpose including a contact adapted to form an electricarc with the work and further including an air blast pipe designed todeliver a very strong blast of air at or near the are for the purpose ofblowing away the metal when it is melted so as to prevent its weldingonto the material.

Another object is the provision of an advantageous process of removingrivet heads.

A collateral object is the provision of a device of this character whichwill be simple and inexpensive in manufacture, highly eflicient in use,durable in service, and a general improvement in the art.

With the above and other objects and advantages in view, the inventionconsists in the details of construction to be hereinafter more fullydescribed and claimed and illustrated in the accompanying drawings inwhich-- Figure 1 is a side elevation of the device,

Figure 2 is an elevation at right angles to Fi ure 1,

igure 3 is an enlarged longitudinal sectional view through one endportion of the device,

Figure 4 is a similar view through the other end portion. A

Figure 5 is a cross sectional view on the line 55 of Figure 4, and

Figure 6 is a cross sectional view on the line 66 of Figure 3.

For the sake of clearness the process will be described in conjunctionwith the device illustrated in the drawings in which the numeral 10designates the handle of the device which is of any suitable size andcrosssectional configuration and which is considerably elongated, andthis handle is formed of suitable insulating material such as hardrubber, fiber, ebonite, or the like. Disposed at one end of the handleis a member 11 which terminates in a reduced extension 12 bifurcated asindicated at 13. Disposed within this bifurcation is a holder.

and secured within the bifurcation by' suitable bolts 17 The loop 15 isformed with its axis inclined with respect to the axis of the handle 10and this loop is adapted to hold a carbon or similar electrode 18, theloop 15 being held in clamping engagement with the electrode by a bolt19.

I Extending, longitudinally within the han- I dle 10 is a rod 20 whichis screwed into the member 11 and of course makes electrical connectionwith the electrode holder. An asbestos washer 21 surrounds this rod between the end of the handle and the member 11 to prevent burning lhehandle. Threaded onto the other end of this rod is a connector 22connected with a wire 23 which leads from any suitable source ofcurrent, not shown.

isposed alongside the handle 10 is an air conducting pipe 24 heldassociated with the handle by suitable bands 25 which in actual practicemay be wire bent around and clinched. This pipe 24 extends beyond therear end of the handle 10 and carries a suitable union 26 for connectionwith a compressed air ipe 27 leading from any suitable supply tanli orthe like. Intermediate its ends the pipe is provided with a controlvalve 28 of conventional vpattern by means of which the flow ofcompressedair may regulated. The other end of the pipe 24 1S inclinedaway from the handle 10 and carries ,at its extremity a nozzle 29 whichis directed toward the active end of the electrode 18.

In the operation of the device the source of current has one terminalconnected with the work from which projects the rivet or the like to becut off, the other terminal being connected with the rod 20. Theoperator uses the device by grasping it in his hand and disposing it sothat the point of the electrode 18 will be spaced shghtly from the rivetor bolt head to be removed whereupon the current will are from theelectrode 18 to the rivet head, resulting in melting of the rivet head.When the metal is melted the operator opens the valve or cock 28 tpermit the compressed air to pass through the pipe 24 and the jet of airissuing from the nozzle 29 will impinge against this molten metal andblow it off the work so as to pre vent it from welding thereonto.

From the foregoing description and a study of the drawings it will beapparent that I have thus provided a simply constructed and consequentlinexpensive device which will very eflicient y operate to cut ofl orremove bolt or rivet heads and the like and which will eificientlyperform all the functions for which it is intended.

\Vhile I have shown and described the preferred embodiment of myinvention, it is of course to be understood that I reserve the right tomake such changes in the form, con

struction, and arrangement of parts as will not depart from the spiritof the invention or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. A device for removing rivet heads. comprising a handle, an electrodeattached to said handle, a compressed air pipe also attached to thehandle, the outlet nozzle of said pipe capable of being directed towardsthe electrode, the compressed air when released, serving to remove metalmelted by the electrode.

2'. The process of removing rivet heads which consists in reducing arivet head to a molten state and then dissipating the molten metal bythe action of fluid under pressure.

3. A device for removing rivet heads comrising a handle, meansassociated with said handle to reduce a rivet head to a molten state,and a valved conduit extraneous to said reducing means and having anoutlet nozzle capable of being directed towards the reducing means tosupply ahead of fluid under pressure to remove the metal melted by thereducing means.

In testimony whereof I aifix my signature.

BENNETT CLAY WYSONG.

